Silt fence installing machine



FIG. 1 is a left rear perspective view of a silt fence installing machine showing my new design;

FIG. 2 is a front elevation thereof;

FIG. 3 is a rear elevation thereof;

FIG. 4 is a left end view thereof;

FIG. 5 is a right end view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof. 

I claim the ornamental design for a silt fence installing machine, as shown and described. 